The Venetian Affair (1967) [Sandra Fane]: Shot in the chest or stomach (we don't see exactly where she's hit) by Carl Boehm in a train compartment, while she's talking to Robert Vaughn.

The Wrecking Crew(1969) [Linka Karensky]: Machine-gunned by her own thugs when a secret panel opens and they open fire, expecting Dean Martin to be there instead.

Lisa and the Devil(1974) [Lisa Reiner]: At the end of the movie, she suddenly assumes a corpse-like appearance and collapses, implying that she's been a ghost throughout the entire movie. (This ending is only present in Lisa and the Devil; the alternate version The House of Exorcism ends differently, with Elke surviving.)

Left for Dead (I Miss You, Hugs & Kisses) (1978) [Magdalene Kruschen]: Bludgeoned to death with a lead pipe in a parking garage. Her body is later shown as the police investigate and the coroner/crime-scene officer undresses the body. (Nudity alert: Topless & rear)

Top of the Hill (1980) [Eva Heggener]: Killed in a skiing accident during a chase scene with Wayne Rogers.

Inside the Third Reich(1982) [Magda Goebbels]: Shot to death (along with Ian Holm) by a German soldier, on Ian's own orders. (I haven't seen this, but its timeframe does cover the postwar period after the Goebbels' death.) (Thanks to PortsGuy)